Use mock for scheduler tests

In our effort to move from mox to mock, this patch will convert the
scheduler unit tests to use mock exclusively.  Also fixed some pylint
errors along the way.

Change-Id: If5a94838981a04a38c2797ced07f23abfafbedb7
[Netapp/Nexenta] Move registration of config options

This doesn't really make a difference in practice, but
makes it possible for the sample config generator to figure
out the config group relationship when options are in one
file.

Change-Id: I3bc6ab5bcc85a8c11c9261b0d8c520fb846a7864
Adds unit tests for drivers.rbd.RBDImageIOWrapper

Change-Id: Id256ec6ed20c1f52eb67cf5a807f67b01a641962
Closes-bug: 1238614
Imported Translations from Transifex

Change-Id: I2554bd4a076f855c8f2026d98ecb649b35edcbf8
3PAR FC: add ability to add WWNs to host

When a host is created on the HP 3PAR array,
at initialize connection time, the host is
created with all WWNs provided in the connector
structure. However, the driver did not have
the ability to add new WWNs after a host is created.

This patch adds the ability to add WWNs to a
host, at initialize connection time, if a new
WWN is provided in the connector structure.

Change-Id: I6fd8a5511f83d5460da30ff5558a3e95964a95f5
Closes-bug: 1258229
Merge "Adds unit tests for drivers.rbd.RBDImageIOWrapper"
Merge "[Netapp/Nexenta] Move registration of config options"
Merge "Use mock for scheduler tests"
Merge "3PAR FC: add ability to add WWNs to host"
Merge "Imported Translations from Transifex"